The identification and study of 20 syntactical patterns responsible for much of the structural ambiguity found in literary composition can develop in students an audience awareness. When they realize that such constructions as "a dull boy's knife" and "the club will be open to members from Monday to Thursday" can be misinterpreted, they take more care in their sentences. If students study these ambiguities, write original examples illustrating each type, and participate in class discussions about better ways of presenting the information, they can learn to write with greater economy and precision. (LH)